Comparison of approximate and functional compositions in sea cucumber Apostichopus japonicus farmed in three patterns

The approximate( protein,ash,fat,carbohydrate,amino acids and fatty acids),and functional compositions( polysaccharides,and collagen) were determined in sea cucumber Apostichopus japonicus with body weight of 67. 11 g,96. 15 g and 258. 40 g farmed in ponds,shallow coasts and deep coasts in Dalian,respectively. It was found that there were the maximal levels of protein,lipid,and carbohydrate and the minimal level of ash in the sea cucumber farmed in ponds. The maximal polysaccharide content,and higher amino saccharide and alduronic acid were observed in the sea cucumber farmed in ponds,with the maximal collagen content in the sea cucumber farmed in deep coast. Polyunsaturated fatty acids were found to be the predominant fatty acids in sea cucumber farmed in the three patterns,the maximal level of polyunsaturated fatty acids,especially EPA,in the sea cucumber farmed in deep coast. There was the maximal glutamic acid content in the sea cucumber farmed in the three patterns,with the maximal level of essential amino acids in the sea cucumber farmed in ponds. The findings show that there are different approximate and functional compositions in the sea cucumber farmed in different patterns,which provides reference to rational consumption and to reasonable price for producers and consumers.